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  1. Groovy
  2. GROOVY-1823

Add ability to mock/stub constructors

        Details

        • Type: Improvement
        • Status: Closed
        • Priority: Minor
        • Resolution: Fixed
        • Affects Version/s: 1.0
        • Fix Version/s: 1.7.1
        • Component/s: mocks and stubs
        • Labels:
          None
        • Environment:
          groovy 1.0, Java 1.5, Windows 2000

          Description

          Would like the ability to stub/mock constructors.

          Example:

          def dateStub = new StubFor( Date )

          dateStub.demand.Date

          { aControlCurrentTime }

          Expectation is that .Date would be the default constructor of the Date class.

            Activity

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            paulk Paul King added a comment -

            I have a minor modification to MockFor/StubFor which supports this functionality. Here is an example of usage (mirroring this issue's suggestion):

            import groovy.mock.interceptor.MockFor
class Person {
  String first, last
}
def interceptConstructorCalls = true
def mock = new MockFor(Person, interceptConstructorCalls)
def dummy = new Person(first:'Tom', last:'Jones')
mock.demand.with {
  Person() { dummy } // expect constructor call, return dummy
  getFirst() {'John'}
  getLast() {'Doe'}
}
mock.use {
  def p = new Person(first:'Mary', last:'Smith')
  assert p.first == 'John'
  assert p.last == 'Doe'
}

            There is an optional parameter (defaulting to false) for the Constructor which indicates that mocking of the constructor is to be enabled. It is only possible to use with GroovyObjects.

            Show
            paulk Paul King added a comment - I have a minor modification to MockFor/StubFor which supports this functionality. Here is an example of usage (mirroring this issue's suggestion): import groovy.mock.interceptor.MockFor class Person { String first, last } def interceptConstructorCalls = true def mock = new MockFor(Person, interceptConstructorCalls) def dummy = new Person(first:'Tom', last:'Jones') mock.demand.with { Person() { dummy } // expect constructor call, return dummy getFirst() {'John'} getLast() {'Doe'} } mock.use { def p = new Person(first:'Mary', last:'Smith') assert p.first == 'John' assert p.last == 'Doe' } There is an optional parameter (defaulting to false) for the Constructor which indicates that mocking of the constructor is to be enabled. It is only possible to use with GroovyObjects.
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            paulk Paul King added a comment -

            Proposed patch - planning to apply to trunk once I have written some tests.

            Show
            paulk Paul King added a comment - Proposed patch - planning to apply to trunk once I have written some tests.
            Hide
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            paulk Paul King added a comment -

            Fixed in trunk.

            Show
            paulk Paul King added a comment - Fixed in trunk.

              People

              • Assignee:
                paulk Paul King
                Reporter:
                davedude David Weiler-Thiessen
              • Votes:
                5 Vote for this issue
                Watchers:
                8 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:

                  Development